I used to be pro-UBI but no longer. Here's why: most people will stop working and become largely disconnected from society. They will only worry that the UBI is still coming in. A smaller percentage of people will continue working because they are internally compelled to work. These people will make all of the decisions in society. The power will be concentrated in an even smaller pool of people than today, leading to lesser freedom over time for the masses.

What you actually want in society is for as many people as possible to have the means and motivation to contribute to social progress, to keep it as fair as possible. You want more independence, not more dependence.